Maybe have bartenders occasionally provide the details needed to pull up an old Afterthoughts recording when asked for chatter. Maybe X months after the character is permed or after X years of inactivity, whichever comes first.
Maybe there's a ten percent chance a random old recording is mentioned each time one successfully asks for the chatter or the like? I think this would help get old stories or there again and help remind players that Afterthoughts is a thing.
After asking for the chatter you might get something like:
I hear there's an interesting Afterthoughts recording under the name Mike Smith. Code's CODE.
Or
I hear there's an interesting Afterthoughts recording under the name Mike Smith. No code even!
